• 计算:(1)0.008114+(4-34)2+(√8)-43-16-0.75;(2)log3√27+lg25+lg4+7log72+(-9.8)0.试题及答案-解答题-云返教育

    • 试题详情

      计算:
      (1)0.0081
      1
      4
      +(4-
      3
      4
      )2+(
      8
      )-
      4
      3
      -16-0.75
      (2)log
      3
      27
      +lg25+lg4+7log72+(-9.8)0

      试题解答


      见解析
      解:(1)原式=(0.34)
      1
      4
      +22×(-
      3
      4
      )×2
      +2
      3
      2
      ×(-
      4
      3
      )
      -24×(-0.75)
      =0.3+
      1
      8
      +
      1
      4
      -
      1
      8

      =
      11
      20

      (2)原式=log
      33
      3
      2
      +lg(25×4)+2+1
      =
      3
      2
      +2+2+1
      =
      13
      2
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